Question

if x=3+√8then find the value of x^2+1/x^2

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Answer 1

Step-by-step explanation:

this is the answer

Thank you

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Answer 2

Answer:

Step-by-step explanation:

x=3+√8

x²+1/x²

=(3+√8)²+1/(3+√8)²

=(9+6√8+8)+1/(9+6√8+8)

=(17+6√8)+1/(17+6√8)

=[(17+6√8)²+1]/(17+6√8)

=(289+204√8+288+1)/(17+6√8)

=(578+204√8)/(17+6√8)

=(578+204√8)(17-6√8)/(17+6√8)(17-6√8)

=(578+204√8)(17-6√8)/288

=(289+102√8)(17-6√8)/144

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